Sounds like you accidentally set a high limit alarm for the meat probe.
TEMP1, Left window - During normal operation, it displays the temperature values of probe 1. When the high or low limit alarm of probe 1 is on, this window will flash between the alarm type (AH1or AL1) and the temperature. In the parameter setting mode, it displays the controller's system parameters.
Details on setting the high/low limit alarms are in the quick guide page 11 here - http://auberins.com/images/Manual/WSD-1200GPH/Quick%20Guide%20for%20WSD-1200GPH_v1.0.pdf